The State Self-Esteem Scale was developed by Todd Heatherton and Janet Polivy. It is a widely used scale to measure changes in three components of state self-esteem. The article describing the scale can be found here

I receive many requests to use the scale. You should feel free to use the scale for research purposes. No permission is required

The proper citation for the test is: Heatherton, T.F., & Polivy, J. (1991). Development and validation of a scale for measuring state self-esteem. Journal of Personality and Social Psychology, 60, 895-910.